Patents by Inventor Wei-Ching Shih

Wei-Ching Shih has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Coupling filter device with specific coupling coefficient
    Patent number: 7609131
    Abstract: The present invention provides a surface mount design (SMD) coupling filter device with a fixed coupling coefficient having a pair of hollow coils. Theoretically, coupling coefficients of two hollow coils may vary with the parameter such as distance, number of windings, inner radius, wire size, medium coefficient. When a desired coil coupling distance is derived from the above parameters, a pair of hollow coils then is fastened fixed by either a house fastening approach or an adhesive injection fastening approach, such that the desired coil coupling distance can be fixed by using an adhesive with a specific medium coefficient.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: October 27, 2009
    Assignee: Prosperity Dielectrics Co., Ltd.
    Inventors: Kuo-Hsiung Wang, Wei-Ching Shih
  • Coupling filter device with specific coupling coefficient
    Publication number: 20080048801
    Abstract: The present invention provides a surface mount design (SMD) coupling filter device with a fixed coupling coefficient having a pair of hollow coils. Theoretically, coupling coefficients of two hollow coils may vary with the parameter such as distance, number of windings, inner radius, wire size, medium coefficient. When a desired coil coupling distance is derived from the above parameters, a pair of hollow coils then is fastened fixed by either a house fastening approach or an adhesive injection fastening approach, such that the desired coil coupling distance can be fixed by using an adhesive with a specific medium coefficient.
    Type: Application
    Filed: August 23, 2007
    Publication date: February 28, 2008
    Inventors: Kuo-Hsiung Wang, Wei-Ching Shih